700 in need of engine rebuild????? - Yamaha Rhino Forum - Rhino Forums.net
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post #1 of 14 (permalink) Old 03-31-2013, 09:54 AM Thread Starter
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700 in need of engine rebuild?????

First off I have a completely stock '09 700. Went riding a couple weekends ago and got in some mud/water a little deeper than suspected (nothing deeper than what I've been in before). Long story short, serviced the machine and now it is using oil pretty bad. Went on a few hour ride last weekend, and the dipstick shows oil halfway down. I did use Rotella oil (for the first time). Could the oil be causing the problem, or is my top end gone? Gonna change the oil again and go with the yamaha oil just to see if that helps. If I have to rebuild the engine, any suggestions or tips? Would like a little more power anyway, and what kind of price am I looking at? Any info is greatly appreciated! Thanks in advance!
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post #2 of 14 (permalink) Old 03-31-2013, 11:12 AM
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700 in need of engine rebuild?????

Is it smoking?
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post #3 of 14 (permalink) Old 04-01-2013, 12:27 PM
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It is NOT the oil! Fix it before it becomes a much bugger issue. Give us a call if we can help with parts or advice.

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post #4 of 14 (permalink) Old 04-02-2013, 01:12 PM Thread Starter
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Is it smoking?

Yes it is smocking. Slightly at first, but now pretty much all the time. Guess it's time for a rebuild!
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post #5 of 14 (permalink) Old 04-02-2013, 01:15 PM
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700 in need of engine rebuild?????

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Quote:
Originally Posted by Jethro52185 View Post
Is it smoking?

Yes it is smocking. Slightly at first, but now pretty much all the time. Guess it's time for a rebuild!
Just a top end most likely. They sell ready to bolt on kits on eBay for a decent price.

Since you sank it, before your rebuild, I would change the oil in your car, and run it through your rhino to try to get all the grit and grime that got in it out so you don't tear up the new top end.
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post #6 of 14 (permalink) Old 04-05-2013, 07:20 PM Thread Starter
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Originally Posted by featherbones View Post
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Originally Posted by Jethro52185 View Post
Is it smoking?

Yes it is smocking. Slightly at first, but now pretty much all the time. Guess it's time for a rebuild!
Just a top end most likely. They sell ready to bolt on kits on eBay for a decent price.

Since you sank it, before your rebuild, I would change the oil in your car, and run it through your rhino to try to get all the grit and grime that got in it out so you don't tear up the new top end.
Yeah I've looked at parts. May try it myself! Not sure if I be in over my head. Looked at the schematics. Don't look like it would be that bad idk!
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post #7 of 14 (permalink) Old 04-06-2013, 12:56 PM Thread Starter
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Did some more investigation today. Drained the oil and poured it over a magnet. Definatly some very, very fine metal shavings. Also, when I pulled the dipstick with it running, it blew oil everywhere (is normal, if not what would be causing this problem)
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post #8 of 14 (permalink) Old 04-06-2013, 01:02 PM Thread Starter
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The bottom end is making no noise whatsoever that I can tell, and it isn't missing or running rough. It also has no problem going into gear, which a guy at local shop said is a very good sign. He seems to think I should be good with just rebuilding the top end. Any suggestions???? May let him do it, he has a good rep. and works on rhinos regularly. Said he would check it for free anyway. Think he would do me better than the stealership. Also warranties his work for a year. None the less, get her fixed and it's back to watching everyone else be dumb on rides!!! LOL
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post #9 of 14 (permalink) Old 04-07-2013, 05:59 AM
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YOu might just need a top end and valve seals but the metal is worrying me, rings don't leave metal in oil.

The cylinder is nikasil plated so you might have to bore and plate it.

Also your 09 probably has old reverse gear and if you pull engine from the Rhino to fix it, might as well split case look for where the metal is coming from and then replace the reverse gear with new style while you are at it.

Only place I can think of metal could come from is rod bearing.

You can always pull engine, ship it via UPS to us and we can fix it for you.

Todd
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post #10 of 14 (permalink) Old 04-15-2013, 01:13 PM Thread Starter
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Ok, so I talked to my mechanic today. Not good news. They got the top end down and say the cylinder is worn at an angle (like the rod was not running true or somehow twisted). He also said there is about 20 thousandths movement in the crank assembly. He recommeds splitting the case and possibly a total rebuild. Suppose to send some videos and pics of what he found. Now to the point, shoud I go ahead and do the whole motor? Also, what are parts gonna run me for a bottom and top end kit? More than likely going to go with a 10.2 compression big bore kit on top.
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post #11 of 14 (permalink) Old 05-05-2013, 02:44 PM Thread Starter
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Well, got my rhino back the other day. Went with a cylinder works big bore kit 9.2 compression. Still have a minor issue. First off, runs smooth as silk at an idle and low speeds. But when I get to about 30mph it seems to want to stop pulling and actually pops and backfires a time or two and then goes on. Seems very sluggish from 30+. I do have 27" swamp lite tires, but can't seem to remember the power issue around 30 before. My question is, do I need to up my injector and/or do a cdi box. Really didn't pick up any power, may have even lost a little. Any ideas or suggestions are greatly appreciated.
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post #12 of 14 (permalink) Old 05-05-2013, 02:48 PM
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Bigger injector no

So you have stock cam, just bigger piston and higher compression?

If so you still need a custom fuel map for it via a MSD or something like that

Also you could be off one tooth off on the cam to piston timing

Feel free to call me and we can figure it out

Todd
601-771-0070
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post #13 of 14 (permalink) Old 05-10-2013, 01:01 PM Thread Starter
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Bigger injector no

So you have stock cam, just bigger piston and higher compression?

If so you still need a custom fuel map for it via a MSD or something like that

Also you could be off one tooth off on the cam to piston timing

Feel free to call me and we can figure it out

Todd
601-771-0070
Just got off the phone with Todd at Hunterworks. I must say he was very receptive of my call and more than willing to help me try and figure my problems out. Man don't I wish I would have called before I started this mess. Any way, If Anyone has any issues, I would recommed calling someone who knows what they are talking about before jumping into all this blind folded.

Thanks again for your time Todd!!

Chris
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post #14 of 14 (permalink) Old 05-10-2013, 01:11 PM
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Just glad I could help.
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